Until I got motivated to clear my dead weight(as I saw no reason to do so until I was at the cap of 140)my friend count gradually rose to 119. In hindsight I should've cleared the deadwood earlier, but ultimately I mean to end up with 80 active friends, at which point there is no reason to drop someone, even if they are dead weight, until you're at 140, because even dead weight is still something you can motivate, or even polish for a shot at a section of a blueprint, as well as the goods you can get through Dynamic Tower.